Home / 20,481.08-28,253.58-11,977.64

Finding the Fourth Proportional to 20,481.08, 28,253.58 and 11,977.64

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Solution

The fourth proportional to 20,481.08, 28,253.58 and 11,977.64 is: 16,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.08 : 28,253.58 = 11,977.64 : x
  2. Step 2: Convert to fraction form
    20,481.08/28,253.58 = 11,977.64/x
  3. Step 3: Cross multiply
    20,481.08x = 28,253.58 × 11,977.64
  4. Step 4: Simplify right side
    20,481.08x = 338,411,209.95
  5. Step 5: Solve for x
    x = 338,411,209.95/20,481.08
  6. Step 6: Final answer
    x = 16,523.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.